Brake.



PATENTED- MAR. 8

' J. A...& c. MAYS.

l BRAKE'. APPLIOATION FILED 00T. 31. 1903.

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BRAKE. APPLIGATON PILED 00T. 31. 1903. No MODEL.

PATENTED MAR. 8, 1904.

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UNITED STATES Patented March 8, 1904.

PATENT OEEICE.

JOSEPH A. MAYS AND CHARLES MAYS, oE PHILADELPmA, PENN- sYLvANTA.

; BRAKE.

SPECIFICATION forming part of Letters Patent No. 753,898, dated March 8,1904.

Application filed October 3l, 1903. Serial No. 179,423. (N o modell.)

To all whom it nca/y concern:

Y residing at Philadelphia, in the county of Phila- -the chains.

delphia and State of Pennsylvania, have invented new and usefulImprovements in Brakes, of which the following is a specification. Y

Our invention has relation to improvements in car-brakes of that kind orclass whereby the braking is effected by contact with the rails of theroad. V

The object is to provide a brake which is simple in construction, strongin operation, i

and durable in use. i

The invention embodies a vertically-movable frame, brake-arms carryingshoes, an eccentric to operate the frame, and means to operatethe`eccentric, all as hereinafter will be fully set forth, and theasserted novelty particularly pointed out and distinctly claimed.

The improved brake is designed to be used in emergency instances wherethe .regular wheel-brakes fail to work from any cause, or it may be usedin conjunction therewith to effect a quick stop of the car or train.`The brakes are so positioned and secured to the body of the car as tobe operated from either end of the car.

In the drawings, Figure 1 is a bottom plan view of a position'of a carand showing the arrangements of the operating-pulleys and Fig. 2 lis aview in elevation across the track, showing the mechanism raised, withthe brake-arms and the brakeshoes free from the track. Fig. 3 is a viewin elevation similar to Fig. 2, showing brakearms lowered, with thebrake-shoes in control with the rails of the track. Fig. 4 is a sideView, partly in vertical` section, showing the central operating-pulleysand the eccentric. Fig. 5 is a view of one of the brakestands and rotarybrake-shaft, carrying the actuating-pulley on its lower end. Fig. 6 is adetail plan of a portion of one of the brakearms, showing the manner ofattaching and illustrated in different figures, they are designated bylike reference-notations.

A designates the body of a car only a portion of which is shown andwhich may be of any of the usual and approved makes and constructions;The car is supported on wheels 1 in the usual manner, one of which isshown, and of course rests on trucks carried by the wheels. Becausethese elements formno part of our present invention and are notessential to completely understanding it they have not been illustrated.At a proper position on the car across its bottom is secured a stronggirder or beam 2, having depending flanges along its sides, asindicated. At suitable distances apart and parallel with each other aretrussrods or hangers 3 3, extending across the cars, as shown, and havetheir ends secured to the beam 2 and to theI timbers of the car. In themiddle of these hangers 3 are formed alining bearings, wherein isjournaled a shaft 4, on the projecting end portions of which areiiX-cdly mounted pulleys 5, provided with duplicate grooves, as indicated.In each groove is secured the end of the chains 6 7, which are sosecured to e pulley as to act in the same direction,and rom the pulleythe chains are carried horizontally in opposite directions and at rightangles to the shaft of the pulley and have their end portions carriedabout grooved rollers or pulleys 8, journaled on depending stud-shafts9, secured to the car, and

have their ends connected to rods 10, the other ends of the rods 10being connected to the ends of chains 11,vvhich are carried aroundbrake-actuating frame. This brake-actuating frame is made up of an upperbrake-lifting bar 21, oppositely-arranged depending bars 22 23, havingtheir upper ends secured to the bar 21 and their lower ends secured to abar 24, the ends of which extend a proper distance outwardly and havethe inner ends of the brake-bars pivotally connected thereto,as shown.

The brake-arms 25 consist of substantial metal bars pivotally connectedto the crossbars 24:, as stated, and so placed as' to stand at adownward incline from their pivotal point and of such length as to bearwith force on and against the rails when their pivotal points arelowered. On the outer and free end of each brake-bar is suitablyfastened a brake-shoe 26, consisting of a proper bar of iron or steel ofthe desired length and secured at its end to the end of the brake-bars,substantially as shown. The shoes are braced against lateraldisplacement by braces 27 and are also braced against endwisedisplacement by brace-rods 28 29, having one end secured to the shoesand the other adjustably secured to the car, as seen at 30.

On the shaft 4 is mounted an eccentric or cam 32, arranged to bear onthe cross-bar 24 and move it downward and cause the brakearms to extendand the brakes to be applied, and then when the brakes have served theirpurpose the cam is reversed and lifts and releases the brakes by bearingon the liftingbar 21. Chains 33 connect the lifting-bar 2l to thebrakebars,so that when the bar moves upward the bars, with thebrake-shoes, are lifted from contact with the rails. u

It is apparent that While we have shown the brake-shoes as formed toengage on the tread and against the iange of a common well-knownstreet-rail any one skilled in the art can adapt the shoes toset inproper braking relation on other shapes of rails.

The operation is readily divined from the purview of the description;but it may be stated when the call is made or the exigency arises forthe brakes to be applied the brakeman turns the handle, whichcommunicates rotation to the pulley 14: and through the rnedium oi' thechains imparts rotation to the pulley 5, turning the cam and moving thebrake-frame down, thus extending the brakearms and putting on thebrakes. The reversal of the handle will, through the describedconnections, throw the brakes off.

Having thus fully described our invention, what we claim as new isf l.In a car-brake of the rail class, a hori- Zontally-mounted groovedpulley, an eccentric on the shaft of the pulley, averticallyreciprocable frame actuated by the eccentric, brake-armsextending in opposite direction, pivotally connected to the reciprocableframe, shoes on the outer ends of the brake-arms to engage on thetrack-rails, and means to rotate the grooved pulley substantially asdescribed.

2. A car-brake of the rail class, comprising a vertical brake-staf, agrooved pulley on the lower end of the brake-staff, oppositely-extendediexible members connected to the pulley, a horizontally-mounted shaftdisposed endwise on the car, a grooved pulley on the shaft having theflexible members connected thereto, an eccentric or cam on the shaft, avertically-reciprocable frame actuated by the cam, oppositely-extendingbrake-arms pivotally connected to the frame, brake-shoes carried on theouter ends of the brake-arms, and means connected to the brake-staff toactuate all the elements.

In testimony whereoil we aiix our signatures in presence of twowitnesses.

JOSEPH A. MAYS. CHARLES MAYS.

